CN108227180A - A kind of machinery optic modulating device - Google Patents
A kind of machinery optic modulating device Download PDFInfo
- Publication number
- CN108227180A CN108227180A CN201611199881.XA CN201611199881A CN108227180A CN 108227180 A CN108227180 A CN 108227180A CN 201611199881 A CN201611199881 A CN 201611199881A CN 108227180 A CN108227180 A CN 108227180A
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- motor
- machinery
- chopper blade
- optic modulating
- modulating device
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
- G02B26/04—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The present invention provides a kind of mechanical optic modulating device, and including control section and chopping device, the chopping device is set as being electrically connected the control section；The control section is set as including outer synchronous signal interface, phaselocked loop and servomotor controller；The chopping device is set as including chopper blade and motor, and the chopper blade, which is set as driving by the motor, to be rotated, and the motor is set as being electrically connected the servomotor controller.The present invention is using the device, and while High Extinction Ratio can be realized in resonance scan concealment process, non-dispersive effect reduces production cost, and is applicable to a plurality of types of resonance scan blanking demands.
Description
Technical field
The present invention relates to resonance scan technical field of auxiliary equipment more particularly to a kind of mechanical optic modulating devices.
Background technology
With the raising to living body biological sample and quick variation physiological activity imaging requirements during Germicidal efficacy, resonance
Scanner is because it can carry out quickly scanning gradually instead of traditional galvanometer scanner application, and still, existing resonance is swept
Retouching device, there are the following problems in actual use：
1st, resonance scanner is operated in open loop situations, and near sinusoidal variation is presented in sweep speed in each row so that
Resonance scanner scanning per a line center portion (about 88%) when, sweep speed approximation at the uniform velocity, and scan it is each
During capable both ends, sweep speed is excessively slow, is easy to cause excessive sample exposure, the problems such as dye bleach occurs, therefore, it is necessary to
During the both ends of the every a line of scanning, the method for inputting (rather than closing laser) by cutting off laser avoids the situation, that is, carries out
Horizontal blanking.
2nd, after each hundred row of frame number scanning is completed, probe needs to return to the initial position of next frame resonance scan,
This process, which takes about, completes a few row scannings spent time, while cut-out laser input is also needed to realize field blanking, in addition, altogether
The scanner that shakes usually has simple scanning and bilateral scanning both of which, and simple scanning pattern also exists back with respect to bilateral scanning pattern
Journey blanking problem, also results in the reduction of scan efficiency.
3rd, it is widely used at present to be based on Electro-optical Modulation to realize that resonance scanner is quickly opened and closed to what laser inputted
The Pockers cell of effect and the acousto-optic modulator based on acousto-optic modulation effect, acousto-optic modulation is than Electro-optical Modulation extinction ratio higher (one
As be more than 1000:1), and drive efficiency is lower, and temperature stability is excellent, and optical spot quality is more preferable, and price is lower, but its dispersion is tight
Weight, can make femto-second laser pulse significantly be widened, cause the decline of picture quality, meanwhile, both measures cause of high cost.
Invention content
It is a primary object of the present invention to solve problems of the prior art, providing one kind can disappear in resonance scan
While High Extinction Ratio is realized in implicit procedure, ensure non-dispersive effect, and reduce production cost, and be applicable to a plurality of types of
The mechanical optic modulating device of resonance scan blanking demand.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of machinery optic modulating device, wherein described
Mechanical optic modulating device includes control section and chopping device, and the chopping device is set as being electrically connected the control section,
The working condition of the chopping device is controlled according to the information of external optical flying-spot microscope by the control section, realizes resonance
Row/field blanking of scanning process；
The control section is set as including outer synchronous signal interface, phaselocked loop and servomotor controller, described outer
The input terminal of portion's synchronizing signal interface is set as being electrically connected the Y-axis galvanometer of external optical flying-spot microscope, and the outside is same
Step signaling interface is used to receive the sawtooth wave field drive signal of Y-axis galvanometer scanner in external optical flying-spot microscope, and should
The output terminal of outer synchronous signal interface is set as being electrically connected the input terminal of the phaselocked loop, passes through the lock phase of the phaselocked loop
The signal received is converted into driving with the sawtooth wave field of Y-axis galvanometer scanner in external optical flying-spot microscope by circuit
The pulse signal of signal same-phase, the output terminal of the phaselocked loop are set as being electrically connected the input of the servomotor controller
End, the servomotor controller are used to amplify the pulse signal that the phaselocked loop generates, and provide sufficiently large driving current,
The output terminal of the servomotor controller is set as being electrically connected the chopping device；
The chopping device is set as including chopper blade and motor, and the chopper blade, which is set as driving by the motor, to be revolved
Turn, the motor is set as being electrically connected the servomotor controller, and the electricity is controlled by the servomotor controller
Machine rotates, and so as to which the chopper blade be driven to rotate to cut off laser inputs light beam, carries out quick row/field blanking of resonance scan,
The problems such as effectively avoiding the excessively slow caused excessive sample exposure of sweep speed or dye bleach.
Further, the motor is coaxially arranged in the location hole in the centrally disposed a positioning hole of the chopper blade
Output shaft, the motor drives the chopper blade rotation, so as to fulfill row/field blanking during resonance scan.
Further, the concyclic heart is uniformly arranged several through-holes around the location hole, and the through-hole is radially symmetrically set
It puts, and the specification of the through-hole and quantity are set as resonance scan speed, line number and the scanning according to external optical flying-spot microscope
Depending on pattern, in order to realize quickly-blanking, the position of the through-hole will be set close proximity to the edge of the chopper blade.
Further, the location hole is disposed as processing using mask-chemical etching process with the through-hole.
Further, the chopper blade is set as copper, copper alloy, aluminum or aluminum alloy material.
Further, the motor is set as servo motor, and the rotating speed of the servo motor is set as 100rpm extremely
100000rpm, the servo motor has that electromechanical time constant is small, the linearity is high and the characteristics such as pickup voltage.
Further, the chopper blade is set as fixing by metal fixture with the motor.
The invention has the advantages and positive effects that：
(1) by the cooperation of outer synchronous signal interface, phaselocked loop, servomotor controller, chopper blade and motor, ensure
Mechanical light chopping modulation function, and the structure, relative to Electro-optical Modulation and acousto-optic modulation, extinction ratio higher, extinction ratio is much larger than
1000:1, realize row/field blanking problem during resonance scan.
(2) it by the structure design of servomotor controller, chopper blade and motor, can be controlled by servomotor controller
The rotating speed of motor so that the diameter by the laser beam of chopper blade is adjustable, so as to reduce the difficulty of processing of copped wave piece and
The realization difficulty of focused light passages, if in addition, copped wave piece uses lightweight metal material, such as aluminium, in holding copped wave sheet weight change
In the case of changing less, the diameter increase of copped wave piece, the diameter by the laser beam of chopper blade can accordingly increase, further change
Copped wave piece and the realization degree of focused light passages have been apt to it, to be suitable for a plurality of types of resonance scan blanking demands.
(3) it by the control section of mechanical light modulation and the setting of chopping device, effectively avoids using Electro-optical Modulation or sound
The increase of production cost caused by light modulation, and be combined by control section and chopping device, it is ensured that non-dispersive efficiently resonates
Scanning.
Description of the drawings
Fig. 1 is the structure diagram schematic diagram of the present invention.
Fig. 2 is the structure diagram of chopper blade in Fig. 1.
In figure：10- control sections, 101- outer synchronous signal interfaces, 102- phaselocked loops, 103- servomotor controllers,
20- chopping devices, 201- chopper blades, 202- motors, 203- location holes, 204- through-holes.
Specific embodiment
In order to better understand the present invention, the present invention is further retouched with reference to specific embodiments and the drawings
It states.
As depicted in figs. 1 and 2, a kind of mechanical optic modulating device, including control section 10 and chopping device 20, chopping device
20 are set as being electrically connected control section 10, and copped wave dress is controlled according to the information of external optical flying-spot microscope by control section 10
20 working condition is put, realizes row/field blanking of resonance scan process.
Control section 10 is set as including outer synchronous signal interface 101, phaselocked loop 102 and servomotor controller 103,
The input terminal of outer synchronous signal interface 101 is set as being electrically connected the Y-axis galvanometer of external optical flying-spot microscope, external same
Step signaling interface 101 is used to receive the sawtooth wave field drive signal of Y-axis galvanometer scanner in external optical flying-spot microscope, and
The output terminal of the outer synchronous signal interface 101 is set as being electrically connected the input terminal of phaselocked loop 102, passes through phaselocked loop 102
The signal received is converted into the sawtooth wave field with Y-axis galvanometer scanner in external optical flying-spot microscope by phase lock circuitry
The pulse signal of drive signal same-phase, the output terminal of phaselocked loop 102 are set as being electrically connected the defeated of servomotor controller 103
Entering end, servomotor controller 103 is used to amplify the pulse signal of the generation of phaselocked loop 102, and provides sufficiently large driving current,
The output terminal of servomotor controller 103 is set as being electrically connected chopping device 20.
Chopping device 20 is set as including chopper blade 201 and motor 202, and chopper blade 201 is set as driving by motor 202
Rotation, motor 202 are set as being electrically connected servomotor controller 103, and motor 202 is controlled by servomotor controller 103
Rotation, so as to chopper blade 201 be driven to rotate to cut off laser inputs light beam, carries out quick row/field blanking of resonance scan, effectively
The problems such as avoiding the excessively slow caused excessive sample exposure of sweep speed or dye bleach.
The output shaft of motor 202 is coaxially arranged in location hole 203 for the centrally disposed a positioning hole 203 of chopper blade 201,
Motor 202 drives chopper blade 201 to rotate, so as to fulfill row/field blanking during resonance scan.
The concyclic heart is uniformly arranged several through-holes 204 around location hole 203, and through-hole 204 is radially symmetrical arranged, and this is logical
The specification and quantity in hole 204 be set as according to external optical flying-spot microscope resonance scan speed, line number and scan pattern and
Fixed, in order to realize quickly-blanking, the position of through-hole 204 will be set close proximity to the edge of chopper blade 201.
Location hole 203 is disposed as processing using mask-chemical etching process with through-hole 204.
Chopper blade 201 is set as copper, copper alloy, aluminum or aluminum alloy material.
Motor 202 is set as servo motor, and the rotating speed of the servo motor is set as 100rpm to 100000rpm, servo
Motor has that electromechanical time constant is small, the linearity is high and the characteristics such as pickup voltage.
Chopper blade 201 is set as fixing by metal fixture with motor 202.
Using mechanical optic modulating device provided by the invention, High Extinction Ratio can be realized in resonance scan concealment process
Meanwhile ensure non-dispersive effect, and reduce production cost, and be applicable to a plurality of types of resonance scan blanking demands.When this
When device works, outer synchronous signal interface 101 receives the sawtooth wave of Y-axis galvanometer scanner in external optical flying-spot microscope
Field drive signal, and pass through the phase lock circuitry of phaselocked loop 102, the signal received is converted into and external optical flying-spot microscope
The pulse signal of the sawtooth wave field drive signal same-phase of middle Y-axis galvanometer scanner, then amplified by servomotor controller 103
The pulse signal that phaselocked loop 102 generates, and sufficiently large driving current is provided, and control motor 202 that chopper blade 201 is driven to revolve
Turn, several through-holes 204 and non-position of opening match so that laser beam by or blocking laser realization row/field quickly-blanking,
Now by taking the resonance scanner of usually widely used CTI companies of the U.S. as an example, the resonant frequency with 8KHz or so, Neng Gouti
For the maximum sweep rate of 15600 rows/second, therefore for the image of a width 512x512, frame per second can reach most fast 30 frames/second.
For simple scanning, each image includes 256 forward scan rows (positive definition is from left to right) and 256 reversed
Scan line, due to being resonance scan, the time that often row forward scan and reverse scan are consumed is identical.
Embodiment one：A diameter of 100mm of every chopper blade 201, on piece include the complete blanking for realizing a frame scan
Structure.Therefore the rotating speed of motor 202 is 1800rpm, is equivalent to 30fps.Chopper blade 201 is divided into close to the part of circumference
520 equal portions (15600 divided by 30), wherein 512 equal portions parts are punched, the area punched in every equal portions accounts for the 88% of every part, does not beat
The area in hole accounts for 12%, respectively the approximate part of uniform speed scanning of corresponding often row 88% and left end 6%, 6% blanking of right end
Part, the part of punching allow laser to pass through；The part do not punched stops laser completely.Remaining 8 equal portions do not punch, corresponding per frame
After probe return to the process of next frame the first row initial position.The design of this chopper blade is suitable for bilateral scanning.When altogether
When the scanner that shakes starts forward scan the first row, 6% laser blanking zone is first passed through, corresponds to first equal portions on chopper blade 201
Preceding 6% not perforated zone；Later by 88% scanning area, 88% perforated zone of centre of first equal portions on chopper blade 201 is corresponded to；
Using 15% laser blanking zone, the not perforated zone of rear the 6% of first equal portions on corresponding chopper blade 201；Resonance scan later
Device line feed starts reverse scan and repeats a upper process, and chopper blade 201 is rotated further into second equal portions, and so on ...
When resonance scanner the 512nd row of completion, that is, the 256th reverse scan row, the field blanking stage is initially entered later.Probe returns
To the initial position of the first row.In the process, chopper blade 201 continues to revolve through remaining 8 equal portions not perforated zone, and blocking laser is with reality
Live blanking.By taking the chopper blade 201 of Scitec companies of a compatible Britain machinery chopper as an example, chopper blade 201 it is a diameter of
100mm, thickness 0.5mm, material are half hard brasses of CZ108.In order to realize quickly-blanking, the position of through-hole 204 will be leaned on as possible
The edge of nearly chopper blade 201, at diameter 90mm, corresponding Zhou Changwei 90mm*3.14=283mm, 283mm perimeters are divided into
520 equal portions, every part of length are 0.544mm.The length of wherein perforation accounts for 88%, about 0.48mm.Often capable perforation
Including 512 pixels, therefore corresponding beam diameter is about 0.95um.If beam diameter increase can cause laser to pass through with disappearing
Intermediate zone between hidden becomes gentle, and scan image edge quality is made to be deteriorated.This embodiment is suitable for continuous wave laser light source etc., no
The occasion of pulse width is strict with suitable for femtosecond laser light source etc., because will be about the femtosecond laser beam of 1.2mm diameters
Certain pulse broadening can be introduced by focusing to the light path of 0.95um diameters, although the pulse broadening of this degree can be by pulsewidth pressure
Contracting device compensates.
Embodiment two：202 rotating speed of motor improves N times, then the number of scanning lines that every copped wave piece 201 includes reduces N times, leads to
The laser beam spot sizes for crossing chopper blade 201 increase N times, in this way can reduce the difficulty of processing and focused light passages of copped wave piece 201
Realize difficulty.By taking the C-995 type mechanical choppers of Scitec companies of Britain as an example, motor maximum speed is 10020rpm.
In this application, 302 rotating speed of motor can be set as 9000rpm, improves 5 times, then the scanning that every copped wave piece 201 includes
Line number reduces by 5 times, is 104 rows, increases 5 times by the laser beam spot sizes of chopper blade 201, is 4.75um.On this basis, such as
Fruit copped wave piece 201 uses lightweight metal material, such as aluminium instead, under the premise of keeping copped wave 201 weight changes of piece little, copped wave piece
201 diameters increase M times (M is less than or equal to 3), and design is constant, increase M times by the laser beam spot sizes of chopper blade 201, are
14.25um further reduced the difficulty of processing of copped wave piece 201 and the realization difficulty of focused light passages.
The embodiment of the present invention is described in detail above, but the content is only presently preferred embodiments of the present invention,
It should not be construed as limiting the practical range of the present invention.All changes and improvements made in accordance with the scope of the present invention, should all
It still belongs within this patent covering scope.
Claims (7)
1. a kind of machinery optic modulating device, it is characterised in that：The machinery optic modulating device includes control section and chopping device,
The chopping device is set as being electrically connected the control section；
The control section is set as including outer synchronous signal interface, phaselocked loop and servomotor controller, and the outside is same
The input terminal of step signaling interface is set as being electrically connected the Y-axis galvanometer of external optical flying-spot microscope, and the external sync is believed
The output terminal of number interface is set as being electrically connected the input terminal of the phaselocked loop, and the output terminal of the phaselocked loop is set as electrically connecting
The input terminal of the servomotor controller is connect, the output terminal of the servomotor controller is set as being electrically connected the copped wave
Device；
The chopping device is set as including chopper blade and motor, and the chopper blade, which is set as driving by the motor, to be rotated,
The motor is set as being electrically connected the servomotor controller.
2. machinery optic modulating device according to claim 1, it is characterised in that：A centrally disposed positioning for the chopper blade
The output shaft of the motor is coaxially arranged in the location hole for hole.
3. machinery optic modulating device according to claim 2, it is characterised in that：The concyclic heart is uniform around the location hole
Several through-holes are set, and the edge for being located proximate to the chopper blade of the through-hole is simultaneously radially symmetrical arranged, and the rule of the through-hole
Lattice and quantity are set as depending on resonance scan speed, line number and scan pattern according to external optical flying-spot microscope.
4. machinery optic modulating device according to claim 3, it is characterised in that：The location hole is respectively provided with the through-hole
For using mask-chemical etching process processing.
5. machinery optic modulating device according to claim 1, it is characterised in that：The chopper blade be set as copper, copper alloy,
Aluminum or aluminum alloy material.
6. machinery optic modulating device according to claim 1, it is characterised in that：The motor is set as servo motor, and
The rotating speed of the servo motor is set as 100rpm to 100000rpm.
7. machinery optic modulating device according to claim 1, it is characterised in that：The chopper blade is set as with the motor
It is fixed by metal fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611199881.XA CN108227180A (en) | 2016-12-22 | 2016-12-22 | A kind of machinery optic modulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611199881.XA CN108227180A (en) | 2016-12-22 | 2016-12-22 | A kind of machinery optic modulating device |
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| Publication Number | Publication Date |
|---|---|
| CN108227180A true CN108227180A (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611199881.XA Pending CN108227180A (en) | 2016-12-22 | 2016-12-22 | A kind of machinery optic modulating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487146A (en) * | 2013-09-16 | 2014-01-01 | 华南师范大学 | Ultra wide band stimulated raman spectroscopy microscopic imaging system simple and convenient to use |
| CN104181110A (en) * | 2014-08-15 | 2014-12-03 | 中国科学院上海技术物理研究所 | Laser dual-modulation reflection spectrum detection system based on microscope |
| CN104767443A (en) * | 2015-01-21 | 2015-07-08 | 田苍 | Servo motor control system |
| WO2016025751A1 (en) * | 2014-08-13 | 2016-02-18 | Gareau Daniel Summer | Line-scanning, sample-scanning, multimodal confocal microscope |
| CN105784651A (en) * | 2016-03-04 | 2016-07-20 | 中国科学院植物研究所 | Plant leaf cross section maximum photochemical quantum efficiency determinator and application method |
| CN205880365U (en) * | 2016-07-27 | 2017-01-11 | 凝辉(天津)科技有限责任公司 | Mechanical light modulator is used in resonance scanning |
-
2016
- 2016-12-22 CN CN201611199881.XA patent/CN108227180A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487146A (en) * | 2013-09-16 | 2014-01-01 | 华南师范大学 | Ultra wide band stimulated raman spectroscopy microscopic imaging system simple and convenient to use |
| WO2016025751A1 (en) * | 2014-08-13 | 2016-02-18 | Gareau Daniel Summer | Line-scanning, sample-scanning, multimodal confocal microscope |
| CN104181110A (en) * | 2014-08-15 | 2014-12-03 | 中国科学院上海技术物理研究所 | Laser dual-modulation reflection spectrum detection system based on microscope |
| CN104767443A (en) * | 2015-01-21 | 2015-07-08 | 田苍 | Servo motor control system |
| CN105784651A (en) * | 2016-03-04 | 2016-07-20 | 中国科学院植物研究所 | Plant leaf cross section maximum photochemical quantum efficiency determinator and application method |
| CN205880365U (en) * | 2016-07-27 | 2017-01-11 | 凝辉(天津)科技有限责任公司 | Mechanical light modulator is used in resonance scanning |
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Application publication date: 20180629 |